Viewing archive of Sunday, 15 January 2023
Solar activity report
Report of Solar-Geophysical Activity 2023 Jan 15 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 15 Issued at 2200Z on 15 Jan 2023IA. Analysis of Solar Active Regions and Activity from 14-2100Z to 15-2100Z Solar activity has been at high levels for the past 24 hours.
The largest solar event of the period was a M6 event observed at
15/0342Z from Region 3191 (N12E40). There are currently 9 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is likely to be moderate
with a slight chance for an X-class flare on days one, two, and three
(16 Jan, 17 Jan, 18 Jan).
IIA. Geophysical Activity Summary 14-2100Z to 15-2100Z
The geomagnetic
field has been at unsettled to minor storm levels for the past 24 hours.
Solar wind speed reached a peak of 529 km/s at 15/0137Z. Total IMF
reached 11 nT at 14/2351Z. The maximum southward component of Bz reached
-10 nT at 15/0610Z. Electrons greater than 2 MeV at geosynchronous
orbit reached a peak level of 317 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one and three (16 Jan, 18
Jan) and quiet levels on day two (17 Jan). Protons have a chance of
crossing threshold on days one, two, and three (16 Jan, 17 Jan, 18 Jan).
III. Event Probabilities 16 Jan to 18 Jan
| Class M | 55% | 55% | 55% |
| Class X | 15% | 15% | 15% |
| Proton | 25% | 25% | 25% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 15 Jan 234 Predicted 16 Jan-18 Jan 235/230/225 90 Day Mean 15 Jan 141
V. Geomagnetic A Indices
Observed Afr/Ap 14 Jan 009/009 Estimated Afr/Ap 15 Jan 022/026 Predicted Afr/Ap 16 Jan-18 Jan 008/008-005/005-007/010
VI. Geomagnetic Activity Probabilities 16 Jan to 18 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 25% |
| Minor storm | 01% | 01% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 20% | 20% | 30% |
| Major-severe storm | 20% | 20% | 30% |
All times in UTC
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| Last X-flare | 2024/11/06 | X2.3 |
| Last M-flare | 2024/11/08 | M1.4 |
| Last geomagnetic storm | 2024/10/12 | Kp5 (G1) |
| Spotless days | |
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| Monthly mean Sunspot Number | |
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| Last 30 days | 160.2 +7.9 |